STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Tongue papillae. Coloured scanning electron micrograph (SEM) of filiform papillae on the surface of the tongue. Some types of papillae, or small projections, house tastebuds, but filiform papillae are predominantly mechanical. They give the tongue its rough texture, which helps to move food around in the mouth. The papillae have a scaly appearance because they are constantly shedding their top layer of skin. Magnification: x90 when printed 10 centimetres wide.
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